scholarly journals Validation of the applicability of a creep model for directionally solidified eutectics with a lamellar microstructure

PAMM ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 297-298 ◽  
Author(s):  
Jürgen Albiez ◽  
Ioannis Sprenger ◽  
Daniel Weygand ◽  
Martin Heilmaier ◽  
Thomas Böhlke
Keyword(s):  
Lamellar Microstructure ◽  
Creep Model ◽  
Directionally Solidified ◽  
Directionally Solidified Eutectics

Orientation relationship and interfaces in Ni and Co-YSZ cermets prepared from directionally solidified eutectics

Open Physics ◽  
2009 ◽  
Vol 7 (2) ◽  
Author(s):  
Angel Larrea ◽  
Miguel Laguna-Bercero ◽  
José Peña ◽  
Rosa Merino ◽  
Víctor Orera
Keyword(s):  
Electron Microscopy ◽  
Lamellar Microstructure ◽  
Porous Metal ◽  
Directionally Solidified ◽  
Orientation Relationships ◽  
Long Term Stability ◽  
Pole Figures ◽  
Metal Ceramic ◽  
Growth Habits ◽  
Directionally Solidified Eutectics

AbstractTextured Ni-YSZ and Co-YSZ (YSZ: cubic yttria stabilized zirconia) cermets prepared by reduction of directionally solidified NiO-YSZ and CoO-YSZ oxide eutectics respectively display a self-organized microstucture formed by ∼400 nm wide alternating lamellae of YSZ and porous metal suitable for electrochemical applications. The electrochemical properties of the cermets depend on their microstructure. We have analyzed the orientation relationships and interfaces both of the oxide composites and cermets using Scanning Electron Microscopy, Transmission Electron Microscopy, X-ray pole figures and Electron Back-Scattering Diffraction. In spite of the similar crystal structure, growth habits and orientation relationships of NiO-YSZ and CoO-YSZ are different. Also the crystallographic behaviour, when cermets are produced, differs. However the metal-YSZ interfaces are about the most stable ones giving good metal-ceramic adhesion. Due to their lamellar microstructure and good metal-ceramic adhesion these composites present long-term stability at working conditions, which makes them good candidates to be used as anodes in solid oxide fuel cells or electrolyzers.

Determination of interface width using EELS fine structure changes

1991 ◽  
Vol 49 ◽  
pp. 730-731
Author(s):  
Vinayak P. Dravid ◽  
M.R. Notis ◽  
C.E. Lyman
Keyword(s):  
Fine Structure ◽  
Materials Science ◽  
Input Parameter ◽  
Core Loss ◽  
Directionally Solidified ◽  
Interface Width ◽  
Structure Changes ◽  
Important Input ◽  
Directionally Solidified Eutectics

The concept of interfacial width is often invoked in many materials science phenomena which relate to the structure and properties of internal interfaces. The numerical value of interface width is an important input parameter in diffusion equations, sintering theories as well as in many electronic devices/processes. Most often, however, this value is guessed rather than determined or even estimated. In this paper we present a method of determining the effective structural and electronic- structural width of interphase interfaces using low- and core loss fine structure effects in EELS spectra.The specimens used in the study were directionally solidified eutectics (DSEs) in the system; NiO-ZrO2(CaO), NiO-Y2O3 and MnO-ZrO2(ss). EELS experiments were carried out using a VG HB-501 FE STEM and a Hitachi HF-2000 FE TEM.

Self-assembled natLiCl–CeCl3 directionally solidified eutectics for thermal neutron detection

CrystEngComm ◽  
2020 ◽  
Vol 22 (19) ◽  
pp. 3269-3273
Author(s):  
Shuangliang Cheng ◽  
Rachel E. Hunneke ◽  
Mengkun Tian ◽  
Eric Lukosi ◽  
Mariya Zhuravleva ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Neutron Detection ◽  
Thermal Neutrons ◽  
Directionally Solidified ◽  
Self Assembled ◽  
Directionally Solidified Eutectics

We developed novel LiCl–CeCl3 eutectic scintillators that are capable of detecting thermal neutrons.

Physically motivated model for creep of directionally solidified eutectics evaluated for the intermetallic NiAl–9Mo

2016 ◽  
Vol 110 ◽  
pp. 377-385 ◽  
Author(s):  
J. Albiez ◽  
I. Sprenger ◽  
C. Seemüller ◽  
D. Weygand ◽  
M. Heilmaier ◽  
...  
Keyword(s):  
Directionally Solidified ◽  
Directionally Solidified Eutectics
Sign in / Sign up

Export Citation Format

Share Document